Shows accelerated aging (Takeda et al 1991).
Has a significantly lower peak bone mass than other SAMP strains, but
rate of decrease is similar to other strains. Mineral and collagen contents
per dry weight of bone show little difference between strains. This suggests
that osteopenia is not due to osteomalacia but rather to osteoporosis
(Matsuchita et al 1986). Median survival
is 321 days in conventional conditions.